Reporting Manager
Stonepine Capital Management, LLC
Symbol
VSTM
Shares outstanding
62,093,767 shares
Disclosed Ownership
2,670,032 shares
Ownership
4.3%
Form type
SCHEDULE 13G/A
Filing time
13 Nov 2025, 16:19:00 UTC
Date of event
30 Sep 2025
Previous filing
06 Aug 2025

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Quoteable Key Fact

"Stonepine Capital Management, LLC disclosed 4.3% ownership in Verastem, Inc. Common Stock (VSTM) on 30 Sep 2025."

Quick Takeaways

  • Stonepine Capital Management, LLC filed SCHEDULE 13G/A for Verastem, Inc. Common Stock (VSTM).
  • Disclosed ownership: 4.3%.
  • Date of event: 30 Sep 2025.

What Changed

  • Previous schedule filing date: 06 Aug 2025.
  • Current filing was accepted on 13 Nov 2025, 16:19.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Stonepine Capital Management, LLC 4.3% 2,670,032 0 2,670,032 /s/ Jon M. Plexico Managing Member
Stonepine Capital, L.P. 4.3% 2,670,032 0 2,670,032 /s/ Jon M. Plexico Managing Member of the General Partner, Stonepine GP, LLC
Stonepine GP, LLC 4.3% 2,670,032 0 2,670,032 /s/ Jon M. Plexico Managing Member
Jon M. Plexico 4.3% 2,670,032 0 2,670,032 /s/ Jon M. Plexico Reporting person